CN112324480A - Collapsible anchor rod device that moves back - Google Patents
Collapsible anchor rod device that moves back Download PDFInfo
- Publication number
- CN112324480A CN112324480A CN202011345354.1A CN202011345354A CN112324480A CN 112324480 A CN112324480 A CN 112324480A CN 202011345354 A CN202011345354 A CN 202011345354A CN 112324480 A CN112324480 A CN 112324480A
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- Prior art keywords
- loop bar
- drill bit
- anchor rod
- sleeve rod
- rod
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- 230000001154 acute effect Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 13
- 238000005065 mining Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a foldable anchor rod withdrawing device, belonging to the technical field of coal mine mechanical equipment; the technical scheme includes that the drill bit assembly comprises a first loop bar, a second loop bar, a drill bit assembly and a limiting mechanism, wherein the first loop bar and the second loop bar are both of a hollow structure, one end of the second loop bar is sleeved at the bottom of the first loop bar, an opening is formed in the cross section of the first loop bar, the width of the opening is not smaller than the outer diameter of the second loop bar, the length of the opening is not smaller than the length of the second loop bar, the top of the first loop bar is connected with the drill bit assembly, the other end of the first loop bar is movably connected with one end of the second loop bar, two drill bit heads in the drill bit assembly are symmetrically arranged and parallel to the loop bar, the other two drill bit heads are symmetrically arranged, an included angle between each two drill bit heads and the loop bar is an acute angle, the other end of the second loop bar is connected with a; the problem of the anchor rod demolish the difficulty in the environment of the abominable condition such as when having solved colliery full-mechanized mining process and handling secondary tunnel, improved the efficiency of moving back the anchor rod.
Description
Technical Field
The invention belongs to the technical field of coal mine mechanical equipment, and particularly relates to a foldable anchor rod withdrawing device.
Background
In the coal mining process of the coal mine fully-mechanized coal mining team group, the anchor rod is frequently required to be detached, if the section is required to be met, the section is expanded from the original 3.8m width to 5.4m width, in order to improve the tunneling efficiency and ensure the safe construction, the original anchor rod is required to be sleeved out, and then the coal is cut by a tunneling machine and is brushed and expanded; if the top plate needs to be timely collapsed within a certain range, hidden dangers are easily formed due to the fact that the distance between the suspended roofs is too large, accidents are caused, the anchor rod needs to be removed in advance in order to enable the top plate to be timely collapsed, however, due to the fact that the anchor rod is difficult to remove due to the fact that the top plate pressure and nuts are corroded, machinery cannot enter a construction working face due to the fact that the conditions of bottom bulging of a bottom plate of a roadway top plate are poor in an operation site of the secondary roadway brushing side of the mine, existing anchor rod removing equipment for treating secondary roadway is not suitable, and safety production and efficiency of the.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a foldable anchor rod withdrawing device. The problem of the anchor rod demolish the difficulty in the environment of the condition abominable when having solved the colliery and combining the mining process and handling secondary tunnel becomes is solved.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
A foldable anchor rod withdrawing device comprises a first loop bar, a second loop bar, a drill bit assembly and a limiting mechanism, wherein the first loop bar and the second loop bar are of hollow structures, one end of the second loop bar is sleeved at the bottom of the first loop bar, an opening is formed in the cross section of the first loop bar, the width of the opening is not smaller than the outer diameter of the second loop bar, the top of the first loop bar is connected with the drill bit assembly, the other end of the first loop bar is movably connected with one end of the second loop bar, the drill bit assembly comprises 4 drill bit heads, the end parts of the drill bit heads are in a pointed sheet shape and are vertically arranged, the bottom end of each drill bit head is fixedly connected with the top of the loop bar, the two drill bit heads are symmetrically arranged and parallel to the loop bar, the other two drill bit heads are symmetrically arranged and form an acute angle with the loop bar, the other end of the second loop bar is connected with a water feeder and a connecting device, and the connecting device, the inner diameter of the second sleeve rod is 10 mm-20 mm larger than the diameter of the anchor rod.
Further, first loop bar is the U type, the external diameter of second loop bar equals the internal diameter of first loop bar, stop gear includes spring and ball, the second loop bar is equipped with first recess on the position with first loop bar coincidence, be equipped with spring and ball in the first recess, the ball is connected to spring one end, and the second loop bar is connected to one end, stop gear establishes in the second loop bar in the middle of the position with first loop bar coincidence, and quantity is 2, and the symmetry sets up, first loop bar is equipped with the round hole, the ball is inlayed in the second recess.
Furthermore, one end of the first loop bar is connected with one end of the second loop bar through a pin shaft.
Further, the drill tip is in an arc-shaped sheet shape matched with the first loop bar.
Furthermore, the drill point head is made of diamond.
Furthermore, the included angle between the two drill tip ends and the outer side of the sleeve rod is 10 degrees.
Furthermore, both ends of the second loop bar are provided with threads, and the second loop bar is fixedly connected with the connecting device through the threads.
Compared with the prior art, the invention has the following beneficial effects:
the invention sets a hollow sleeve rod with the inner diameter larger than the diameter of the anchor rod by utilizing the working principle of cutting and separating the anchor rod from the top plate after reaming the anchor section of the anchor rod, can sleeve the anchor rod in the hollow sleeve rod, simultaneously sets 4 drill bit heads which are connected with a drilling machine through a connecting device, reams the anchor section of the anchor rod by utilizing the rotation of the drilling machine, wherein the two drill bit heads are symmetrically arranged, the included angle between the two drill bit heads and the sleeve rod is an acute angle, the cross section of the reaming is increased, the efficiency of destroying the anchor section of the anchor rod is favorably improved, the connecting water feeder can play the roles of cooling and hydraulic slag removal, sets a U-shaped first sleeve rod, connects the first sleeve rod with a second sleeve rod through a pin shaft, can achieve the purpose of folding, can utilize the folding state for reducing the shaking of the sleeve rod when the anchor rod is sleeved, and rotate and open the second sleeve rod from the first, the anchor rod withdrawing device can be used for withdrawing a longer anchor rod, is simple and easy to manufacture, and greatly improves the anchor rod withdrawing efficiency.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of an open state of a collapsible deswirler device according to the present invention;
FIG. 2 is a schematic view of the foldable anchor rod withdrawing device in a folded state
FIG. 3 is a cross-sectional view of a spacing mechanism of the present invention;
fig. 4 is a top view of the collapsible deswirler device of the present invention.
Wherein, 1 is a first loop bar, 2 is a second loop bar, 3 is a drill bit assembly, 4 is a water feeder, 5 is a drill point, 6 is a connecting device, 7 is a limiting mechanism, 8 is a spring, and 9 is a ball.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
In the coal mining process of a coal mine fully-mechanized mining team, a roadway needs to be secondarily reformed sometimes, in order to meet the section requirement, the section needs to be enlarged to 5.4m from the original 3.8m width, in order to improve the tunneling efficiency and guarantee safe construction, an original anchor rod needs to be sleeved out, then a coal brush is used for expanding, if the roof needs to be timely collapsed within a certain range sometimes, if the overhung distance is too large, hidden danger is easily formed, further accidents are caused, in order to enable the roof to be timely collapsed, the anchor rod is effectively removed in advance, however, due to the roof pressure and nut corrosion, the anchor rod is difficult to remove, in order to solve the problem, the anchor rod removing device is designed through multiple deep tunneling brushing side working faces and fully-mechanized mining working faces, on-site investigation and continuous research and repeated experiments.
(1) Using a pneumatic pump and a tension pump to withdraw the anchor rod: the pneumatic pump selects and uses the FDB 0.63X 63 type pneumatic oil pump with compact rhythm, light weight, convenient carrying and simple operation, the pneumatic oil pump uses compressed air as a power source, an air cylinder and a hydraulic cylinder have larger area difference, thereby using smaller air pressure to enable a hydraulic cylinder to generate high-pressure oil to drive a hollow tensioning hydraulic jack, and simultaneously, an oil pipe joint of the hydraulic oil pump is transformed, so that the oil pump is more convenient and is applicable to the actual condition of a mine, a steel plate with enough strong hardness and thickness of 20mm is selected as a main stress surface of a support frame after repeated experiments, and round steel with the diameter of 16mm is arranged in a triangular mode to serve as main stress support legs of the support frame, so that the support frame which meets the strength requirement and has durable durability is combined.
(2) Using a special anchor rod withdrawing machine to withdraw the anchor rod: the anchor withdrawing mechanism is controlled by a hydraulic system in the whole process, the anchor withdrawing mechanism is controlled by a hydraulic handle, after the anchor rod penetrates into a piston rod of the anchor withdrawing device and is locked, the multi-way reversing valve is operated to control the anchor withdrawing device to contract and move, the anchor rod is stably pulled out, the anchor withdrawing operation is completed, the anchor rod is smoothly pulled out from the coal wall, the thrust of the anchor withdrawing mechanism is required to be larger than the sum of various resistances of the anchor rod in the coal wall, under the normal condition, the various resistances of the anchor rod in the coal wall are 280KN, and the thrust of the anchor withdrawing device is set to be 314 kN.
However, the above devices for treating secondary roadway formation are not suitable for the operation site of brushing the sides of the secondary roadway formation in the mine, and because the condition that the top plate of the roadway sinks and the bottom plate swells is poor, the machine cannot enter the construction working face, an anchor withdrawing device which is easy to operate and low in cost is needed for treatment, can be operated in multiple heads, and can be used for simultaneously constructing the working faces of the secondary roadway formation and multiple sections of brushing sides, so that the safety production and the efficiency of the working faces are ensured.
As shown in fig. 1 to 4, the embodiment provides a foldable anchor rod withdrawing device, which includes a first loop bar 1, a second loop bar 2, a drill bit assembly 3, and a limiting mechanism 7, wherein the first loop bar 1 and the second loop bar 2 are both hollow structures, one end of the second loop bar 2 is sleeved at the bottom of the first loop bar 1, the cross section of the first loop bar 1 is provided with an opening, the width of the opening is not less than the outer diameter of the second loop bar 2, the length of the opening is not less than the length of the second loop bar 2, the top of the first loop bar 1 is connected with the drill bit assembly 3, the other end of the first loop bar 1 is movably connected with one end of the second loop bar 2 through a pin shaft, the drill bit assembly 3 includes 4 drill bit heads 5, the end portions of the drill bit heads 5 are in the shape of a sharp arc sheet matching with the first loop bar 1, the materials are diamonds and are vertically arranged, the bottom ends of the drill bit heads 5 are fixedly connected with the top of the, the other two drill point heads 5 are symmetrically arranged, the included angle between the drill point heads and the sleeve rod is an acute angle, preferably 10 degrees, the other end of the second sleeve rod 2 is connected with a water feeder 4 and a connecting device 6, the connecting device 6 is fixedly connected with a drilling machine, and the inner diameter of the second sleeve rod 2 is 10 mm-20 mm larger than the diameter of the anchor rod. Preferably, first loop bar 1 is the U type, the external diameter of second loop bar 2 equals the internal diameter of first loop bar 1, stop gear 7 includes spring 8 and ball 9, second loop bar 2 is equipped with first recess on the position with 1 coincidence of first loop bar, be equipped with spring 8 and ball 9 in the first recess, ball 9 is connected to spring 8 one end, second loop bar 2 is connected to one end, stop gear 7 establishes in second loop bar 2 in the middle of the position with 1 coincidence of first loop bar, quantity is 2, the symmetry sets up, first loop bar 1 is equipped with the round hole, ball 9 is inlayed in the second recess, the both ends of second loop bar 2 all can be through threaded connection connecting device 6, and connect the rig through connecting device 6.
When in work, firstly, a pneumatic wrench is used for reversely drilling to remove the screw cap and the tray, the joist is removed, the net piece is sheared off, the drilling machine connected with the anchor rod withdrawing device of the embodiment is opened, the drill tip 5 at the front end of the anchor rod rotationally drills into the coal wall to damage the anchoring section of the anchor rod, in order to reduce the shaking of the sleeved anchor rod device, firstly, the folded anchor rod withdrawing device is used for drilling to 1.2m along the direction of the anchor rod, then the anchor rod withdrawing device is pulled out, the round ball 9 is pressed, the second loop bar 2 is rotated at the same time, the round ball 9 at the other side is clamped into the second groove after being taken out from the opening of the first loop bar 1, namely a long anchor rod withdrawing device, the anchor rod withdrawing device in an open state is used for drilling in the required length (example 2.4 m) along the direction of the anchor rod, the anchor rod is sleeved into the hollow structure of the second loop bar 2, the anchor rod is taken out, thereby reach the device that uses simply and move back the stock, need not increase the work efficiency that has very big promotion when the input cost.
The invention sets a loop bar with a hollow structure, the diameter of the inner diameter of which is larger than the diameter of the anchor bar, by utilizing the working principle of cutting and separating the anchor bar anchoring section from the top plate after reaming the anchor bar, the anchor bar can be sleeved in the loop bar, and simultaneously, 4 drill bit heads 5 are set and connected with a drilling machine through a connecting device 6, the anchoring section of the anchor bar is reamed by utilizing the rotation of the drilling machine, wherein, the two drill bit heads 5 are symmetrically arranged, the included angle between the two drill bit heads and the loop bar is an acute angle, the cross section area of reaming is increased, the efficiency of destroying the anchoring section of the anchor bar is favorably improved, the connecting water feeder 4 can play the roles of cooling and hydraulic slag discharge, a U-shaped first loop bar 1 is arranged, the first loop bar 1 is connected with a second loop bar 2 through a pin shaft, the folding purpose can be achieved, the loop bar shakes when sleeving the anchor bar, the loop bar can be used in a folded state, the anchor rod withdrawing device can be used for withdrawing a longer anchor rod, is simple and easy to manufacture, and greatly improves the anchor rod withdrawing efficiency.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The foldable anchor rod withdrawing device is characterized by comprising a first loop bar (1), a second loop bar (2), a drill bit assembly (3) and a limiting mechanism (7), wherein the first loop bar (1) and the second loop bar (2) are both of a hollow structure, one end of the second loop bar (2) is sleeved at the bottom of the first loop bar (1), an opening is formed in the cross section of the first loop bar (1), the width of the opening is not smaller than the outer diameter of the second loop bar (2), the length of the opening is not smaller than the length of the second loop bar (2), the top of the first loop bar (1) is connected with the drill bit assembly (3), the other end of the first loop bar is movably connected with one end of the second loop bar (2), the drill bit assembly (3) comprises 4 drill bit heads (5), the end parts of the drill bit heads (5) are in a pointed sheet shape and are vertically arranged, and the bottom end of the drill bit heads (5) is fixedly connected with the top of the loop bar, two the drill point head (5) symmetry sets up and is on a parallel with the loop bar, two in addition the drill point head (5) symmetry sets up, and is the acute angle with the contained angle of loop bar, the other end of second loop bar (2) is connected with water feeder (4) and connecting device (6), connecting device (6) and rig fixed connection, the internal diameter of second loop bar (2) is greater than the stock diameter 10mm ~20 mm.
2. The foldable anchor rod withdrawing device according to claim 1, wherein the first sleeve rod (1) is U-shaped, the outer diameter of the second sleeve rod (2) is equal to the inner diameter of the first sleeve rod (1), the limiting mechanism (7) comprises a spring (8) and a ball (9), the second sleeve rod (2) is provided with a first groove at a position coinciding with the first sleeve rod (1), the spring (8) and the ball (9) are arranged in the first groove, one end of the spring (8) is connected with the ball (9), one end of the spring is connected with the second sleeve rod (2), the limiting mechanism (7) is arranged in the middle of the position coinciding with the first sleeve rod (1) and is 2 in number, the arrangement is symmetrical, the first sleeve rod (1) is provided with a round hole, and the ball (9) is embedded in the second groove.
3. A collapsible anchor rod withdrawing device as claimed in claim 1, wherein one end of the first sleeve rod (1) is connected to one end of the second sleeve rod (2) by a pin.
4. A collapsible de-bolting apparatus according to claim 1, characterised in that said drill tip (5) is an arc shaped piece matching the first shank (1).
5. A collapsible de-bolting apparatus according to claim 1, wherein said drill tip (5) is made of diamond.
6. A collapsible anchor rod withdrawing device as claimed in claim 1, wherein the two drill point tips (5) are angled at 10 ° to the outside of the shank.
7. A foldable anchor rod withdrawing device according to claim 1, wherein both ends of the second loop bar (2) are provided with threads, and the second loop bar (2) is fixedly connected with the connecting device (6) through the threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345354.1A CN112324480A (en) | 2020-11-25 | 2020-11-25 | Collapsible anchor rod device that moves back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345354.1A CN112324480A (en) | 2020-11-25 | 2020-11-25 | Collapsible anchor rod device that moves back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112324480A true CN112324480A (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011345354.1A Pending CN112324480A (en) | 2020-11-25 | 2020-11-25 | Collapsible anchor rod device that moves back |
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| Country | Link |
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| CN (1) | CN112324480A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453136Y (en) * | 2000-12-12 | 2001-10-10 | 石学让 | Roofbolt recovering device |
| CN2475832Y (en) * | 2001-02-26 | 2002-02-06 | 新汶矿业集团汶南煤矿有限责任公司 | Anchor rod recovery apparatus |
| CN2886051Y (en) * | 2006-04-30 | 2007-04-04 | 永城煤电(集团)有限责任公司 | Anchor rod recovery apparatus |
| CN201125671Y (en) * | 2007-12-18 | 2008-10-01 | 山西焦煤集团有限责任公司 | Anchor bolt recovering device |
| CN201560777U (en) * | 2009-11-04 | 2010-08-25 | 沂源县鲁村煤矿有限公司 | Anchor rod recovery machine |
| CN202596755U (en) * | 2012-06-08 | 2012-12-12 | 安徽恒源煤电股份有限公司祁东煤矿 | Mining roadway coal road side portion anchor rod taking device |
| CN202810879U (en) * | 2012-08-10 | 2013-03-20 | 淮北凯特精工机械电子科技有限公司 | Wind-driven spiral anchor rod recovery device |
| CN203175586U (en) * | 2013-04-24 | 2013-09-04 | 辽宁工程技术大学 | Anchor rod recycling device |
| CN203214079U (en) * | 2013-05-08 | 2013-09-25 | 陈效民 | Lifting rod for anchor rod recycling machines |
| CN203905973U (en) * | 2014-06-12 | 2014-10-29 | 陕西煤业化工技术研究院有限责任公司 | Mining downhole recycling device for anchor rods |
| CN204436424U (en) * | 2015-02-11 | 2015-07-01 | 任润全 | Distortion roofbolt recovering device |
| CN204869272U (en) * | 2015-06-03 | 2015-12-16 | 山西高河能源有限公司 | Hollow drill of usefulness is retrieved to stock |
| CN107401417A (en) * | 2017-08-23 | 2017-11-28 | 山西煤炭运销集团裕兴煤业有限公司 | A kind of mine coal helps anchor recovering method |
| CN208473907U (en) * | 2018-05-04 | 2019-02-05 | 扎赉诺尔煤业有限责任公司 | Roofbolt recovering device |
| CN211058732U (en) * | 2019-11-19 | 2020-07-21 | 山西潞安集团余吾煤业有限责任公司 | Anchor rod taking drill rod |
-
2020
- 2020-11-25 CN CN202011345354.1A patent/CN112324480A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453136Y (en) * | 2000-12-12 | 2001-10-10 | 石学让 | Roofbolt recovering device |
| CN2475832Y (en) * | 2001-02-26 | 2002-02-06 | 新汶矿业集团汶南煤矿有限责任公司 | Anchor rod recovery apparatus |
| CN2886051Y (en) * | 2006-04-30 | 2007-04-04 | 永城煤电(集团)有限责任公司 | Anchor rod recovery apparatus |
| CN201125671Y (en) * | 2007-12-18 | 2008-10-01 | 山西焦煤集团有限责任公司 | Anchor bolt recovering device |
| CN201560777U (en) * | 2009-11-04 | 2010-08-25 | 沂源县鲁村煤矿有限公司 | Anchor rod recovery machine |
| CN202596755U (en) * | 2012-06-08 | 2012-12-12 | 安徽恒源煤电股份有限公司祁东煤矿 | Mining roadway coal road side portion anchor rod taking device |
| CN202810879U (en) * | 2012-08-10 | 2013-03-20 | 淮北凯特精工机械电子科技有限公司 | Wind-driven spiral anchor rod recovery device |
| CN203175586U (en) * | 2013-04-24 | 2013-09-04 | 辽宁工程技术大学 | Anchor rod recycling device |
| CN203214079U (en) * | 2013-05-08 | 2013-09-25 | 陈效民 | Lifting rod for anchor rod recycling machines |
| CN203905973U (en) * | 2014-06-12 | 2014-10-29 | 陕西煤业化工技术研究院有限责任公司 | Mining downhole recycling device for anchor rods |
| CN204436424U (en) * | 2015-02-11 | 2015-07-01 | 任润全 | Distortion roofbolt recovering device |
| CN204869272U (en) * | 2015-06-03 | 2015-12-16 | 山西高河能源有限公司 | Hollow drill of usefulness is retrieved to stock |
| CN107401417A (en) * | 2017-08-23 | 2017-11-28 | 山西煤炭运销集团裕兴煤业有限公司 | A kind of mine coal helps anchor recovering method |
| CN208473907U (en) * | 2018-05-04 | 2019-02-05 | 扎赉诺尔煤业有限责任公司 | Roofbolt recovering device |
| CN211058732U (en) * | 2019-11-19 | 2020-07-21 | 山西潞安集团余吾煤业有限责任公司 | Anchor rod taking drill rod |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xingrun Inventor after: Guo Hongjin Inventor after: Gao Fuping Inventor after: Li Cheng Inventor after: Wang Yantao Inventor after: Zhang Xiaoqing Inventor after: Wang Zhijian Inventor after: Yang Xiaoguo Inventor after: Hao Jun Inventor after: Lu Shengliang Inventor after: Feng Tunsheng Inventor after: Liu Qiang Inventor after: Wu Haitao Inventor after: Cui Nana Inventor before: Huo Lingjun Inventor before: Gao Fuping Inventor before: Li Cheng Inventor before: Wang Yantao Inventor before: Du Kang Inventor before: Wang Limin Inventor before: Nie Xiongchu Inventor before: Zhang Xiaoqing Inventor before: Wang Zhijian Inventor before: Lu Shengliang Inventor before: Bi Yongqian Inventor before: Wu Haitao Inventor before: Du Jianwei Inventor before: Cui Nana Inventor before: Guo Hongjin Inventor before: Liu Yanpeng |